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Evaluate the logarithm.
Round your answer to the nearest thousandth.

log_(3)((1)/(45))~~

Evaluate the logarithm.\newlineRound your answer to the nearest thousandth.\newlinelog3(145) \log _{3}\left(\frac{1}{45}\right) \approx

Full solution

Q. Evaluate the logarithm.\newlineRound your answer to the nearest thousandth.\newlinelog3(145) \log _{3}\left(\frac{1}{45}\right) \approx
  1. Problem Understanding: Understand the problem.\newlineWe need to evaluate the logarithm of the fraction 145\frac{1}{45} with base 33 and round the result to the nearest thousandth.
  2. Simplifying the Expression: Use the logarithm properties to simplify the expression.\newlineWe can use the property that log(ab)=log(a)log(b)\log(\frac{a}{b}) = \log(a) - \log(b) to rewrite the given logarithm as:\newlinelog3(1)log3(45)\log_{3}(1) - \log_{3}(45)
  3. Evaluating log(1)\log(1): Evaluate log3(1)\log_{3}(1).\newlineThe logarithm of 11 to any base is 00 because any number to the power of 00 is 11. So, log3(1)=0\log_{3}(1) = 0.
  4. Factoring 4545: Factor 4545 to express it as a product of powers of 33.\newline4545 can be factored into 3×153 \times 15, and 1515 can be further factored into 3×53 \times 5. So, 45=32×545 = 3^2 \times 5.
  5. Separating the Factors: Use the logarithm properties to separate the factors.\newlineWe can use the property that log(ab)=log(a)+log(b)\log(ab) = \log(a) + \log(b) to rewrite log3(45)\log_{3}(45) as:\newlinelog3(32)+log3(5)\log_{3}(3^2) + \log_{3}(5)
  6. Evaluating log(32)\log(3^2): Evaluate log3(32)\log_{3}(3^2).\newlineSince the base of the logarithm and the base of the exponent are the same, log3(32)=2\log_{3}(3^2) = 2.
  7. Evaluating log(5)\log(5): Evaluate log3(5)\log_{3}(5).\newlineSince 55 is not a power of 33, we cannot simplify this logarithm further without a calculator. We will need to use a calculator to find the value of log3(5)\log_{3}(5).
  8. Calculating log(32)\log(3^2): Calculate log3(5)\log_{3}(5) using a calculator.\newlineUsing a calculator, we find that log3(5)1.465\log_{3}(5) \approx 1.465 (rounded to the nearest thousandth).
  9. Combining the Results: Combine the results to find the final value of the original logarithm.\newlineNow we combine the results from steps 33, 66, and 88:\newlinelog3(145)=log3(1)(log3(32)+log3(5))\log_{3}\left(\frac{1}{45}\right) = \log_{3}(1) - (\log_{3}(3^2) + \log_{3}(5))\newline=0(2+1.465)= 0 - (2 + 1.465)\newline=21.465= -2 - 1.465\newline=3.465= -3.465
  10. Rounding the Final Answer: Round the final answer to the nearest thousandth.\newlineThe final answer is already rounded to the nearest thousandth, so the final answer is 3.465-3.465.

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